I wanted to re-create "Funfetti" boxed cake mix... It was always one of my favorite mixes in the cake section! I really did not want to include nuts so it could be considered "school friendly", so I included xanthum gum in this recipe. Some people may not be familiar with xanthan gum, however, it is an indigestible fiber, and does not need to be calculated into a ketogenic recipe. It is what makes the cake spongy and retain the rise from baking. It also helps hold all of the oil and keep the ingredients emulsified. It is not an ingredient I would choose to use on a daily basis, but sometimes you need to eat cake! I have never seen any adverse reaction to xanthan gum, but please run it by your dietitian just to be sure.